In the steady state, cardiac output equals. venous return. Factors that cause hypereffective heart. Sympathetic stimulation can increase the effectiveness of the heart via: (2) increasing the strength of heart contraction. Factors that can cause a hypoeffective heart: (1) coronary artery blockage.
Thursday, March 19, 2015 - 11:09. Ed Sheeran has added yet another amazing accolade to his collection with the news that his global smash hit sophomore album X has hit the 2 million sales mark, joining a select band of chosen superstars to hit the same achievement.
Topping the all time best sellers list is Queenâs 1981 Greatest Hits, and stands alone as the first and only album to have sold over 6 million copies in the UK (6.1 million sales to date). Queenâs Greatest Hits II also makes it into the Top 10 at Number 10 with almost 4 million albums sold.